2005 F350 no start with no FICM SYNC and P2614

[BrunoWilimek]

This is my first experience actually using the scope to record a pattern. I was hoping someone has seen this pattern before and can help interpret it. The truck was towed in. It had run rough and then stalled at an intersection. I originally had all 8 injector codes as well as the P2614. A FICM fixed the injector codes. I went through the PP test for the P2614 and came to the end and it said "replace PCM". I did not like that choice, so didn't do that. The wiring tests and looks OK. Although the CMP tested OK for resistance and there was no rust under the mounting surface, it had a slightly loose metal tip and damaged o-ring, so I replaced it. Hotline thinks it could be a loose cam gear or tone wheel issue, but not likely a PCM. RPM is steady at 125 cranking. SYNC is yes and ICP and IPR are normal. [/img] Any thoughts on the pattern? It looks like a normal pattern illustrated on previous posts, but seems to be missing teeth. I am able to perform a relative compression test successfully, so likely trigger wheel is OK according to previous postings. I am printing the "Guide for using the IDS Oscilloscope" for reference, and will try to look at the CMP peg with our borescope. I will keep you posted on my findings.

[BrunoWilimek]

This is a better image showing exactly what is taking place. In a properly timed engine, the relationship between the CMP and CKP is fixed. The falling edge of the CMP signal (the red line after the first peak where it hits the white horizontal centreline) should cross the 0 axis within the negative portion of the 11th tooth pulse to the left of the CKP minus 2 teeth area (start counting from right to left to the left of the gap in the sawtooth pattern, counting only the lower tips of the sawteeth). In my recording, the negative CKP pulse is 20, which indicatesa base engine timing change or out-of-postion CKP trigger wheel.